Factory reset T46s w/o admin password

[DanielP]

Hi,

i have a T46s phone with unkwnon/lost admin password.

To get admin access to the phone i plan to setup a tfpfd server with actual firmware (T46S-66.86.0.15.rom), reboot the phone with speaker buuton pressed, enter my tftp server adress an update the phone.
I am not sure if this update method will reset the password fro admin to factory default. Does somebody know if this method is resetting the admin password?

Also please let me know if there is a better way to reset the admin password.

Thanks in advance